By longwave on
Change record status: 
Published (View all published change records)
Project: 
Drupal core
Introduced in branch: 
9.3.x
Introduced in version: 
9.3.0
Issue links: 
https://www.drupal.org/node/3195222
Description: 

Historically, shortcut icons (also known as favicons) were embedded in HTML as follows:

<link rel="shortcut icon" href="favicon.ico">

This is now considered technically incorrect according to the HTML spec, and from Drupal 9.3.0 shortcut icons will be embedded as follows:

<link rel="icon" href="favicon.ico">
Impacts: 
Site builders, administrators, editors
Themers